Here is the full list of all 74 Kingdom Rush achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Complete the campaign in Veteran mode.
Fire the Sunray 20 times.
Have at least 3 Imperial Guards survive in the Citadel.
Defeat Lord Blackburn to avoid war between kingdoms.
Discover the hidden monster under water.
Defeat Moloch the Demon Overlord.
Defeat 9 legions before they replicate.
Defeat Myconid, the Rotten Fungus.
Kill 25 Shrooms without them poisoning your soldiers.
Defeat Greenmuck and its minions.
Find the 5 legendary lost ice-shrooms.
Defeat Ulguk-Hai the Troll Warlord.
Complete all heroic stages.
Defeat 10 Troll Pathfinders while they're treading on ice.
Defeat Sarelgaz and its minions.
Do not let The Kingpin escape.
Complete all iron stages.
Earn 45 stars.
Defeat Gul'Thak and its minions.
Summon 5 rock elementals in any one stage.
Capture the attention of the mysterious crow.
Kill 15 Wererats before they sicken any soldier.
Drop 1.000 or more bomblets with the cluster bomb.
Change soldiers' rally point 200 times.
Find the ninja master rat.
Find the elusive acorn.
Help Fredo escape.
Have your Elves deal 10000 points of damage.
Kill 300 enemies with electricity.
Complete the campaign.
Defeat Vez'nan.
Kill 10.000 enemies.
Earn 30 stars.
Build 4 Tesla towers in any stage.
Throw 500 or more axes.
Have your Paladins perform 100 Holy Strikes.
Have your Paladins heal a total of 7.000 life.
Sell 30 towers.
Have your soldiers survive the explosion of 300 demons.
Shoot 100 missiles.
Snipe 50 enemies.
Polymorph 50 enemies into sheep.
Hold 500 or more enemies with Wrath of the Forest.
Kill 50 enemies by poison damage.
Teleport 250 or more enemies.
Have your soldiers regenerate a total of 50.000 life.
Build all 8 towers specializations.
Defeat J.T.
Disintegrate 50 or more enemies.
Have a single barbarian kill 10 enemies.
Free the sasquatch on the Icewind Pass.
Build 150 towers.
Train 1.00 soldiers.
Send 1.000 soldiers to their deaths.
Defeat The Juggernaut
Earn 15 stars.
Kill 2.500 enemies
Build 100 towers.
Recruit max elves at The Silveroak Outpost.
Kill 100 enemies with meteor showers.
Catch a fish.
Kill 10 or more sheep with your hands.
Train a hero up to max level.
Upgrade all basic tower types to level3.
Train a hero up to level 5.
Sell 5 towers in a single mission.
Build 30 towers.
Open 5 information cards.
Use Rain of Fire 5 times in a single stage.
Kill 500 enemies.
Call a wave within 3 seconds of the icon showing up.
Call 10 waves early.
Call all waves early in a single mission.
Kill one enemy.